5. If there is still too much oil left, you can pour some out. Then add in 1/2 tsp cooking wine, 1 tsp soy sauce, 1 1/2 tsp sugar and 2 tsp vinegar. Quickly stir them to let softbone be coated with sauce evenly.

6. Add in hot water covers all ingredients. Also add in 1 or 2 star anise. Cover the pan with lid. Simmer till water reduces to 1/3.

7. Turn to high heat. And keep stir frying at the same time till water is dry and sauce becomes very condensed.